A where clause with a PK restriction should be identified by the Connector and transformed into a single request. This should still be much slower than doing the request directly but still much much faster than a full scan.
On Wed, Nov 4, 2020 at 12:51 PM Russell Spitzer <russell.spit...@gmail.com> wrote: > Yes, the "Allow filtering" part isn't actually important other than for > letting the query run in the first place. A where clause that utilizes a > clustering column restriction will perform much better than a full scan, > column pruning as well can be extremely beneficial. > > On Wed, Nov 4, 2020 at 11:12 AM Amit Sharma <resolve...@gmail.com> wrote: > >> Hi, i have a question while we are reading from cassandra should we use >> partition key only in where clause from performance perspective or it does >> not matter from spark perspective because it always allows filtering. >> >> >> Thanks >> Amit >> >
